About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
Printability and Defect Process Maps for Laser Powder Bed Fusion of Chemically Modified Graphene Coated Copper |
| Author(s) |
Shishira Bhagavath, Iuliia Elizarova, Yuhan Wang, Kwan Kim, Anna CM Getley, Michal Klosowski, Mark Isaacs, Alexander Rack, Eduardo Saiz Gutierrez, Chu Lun Alex Leung, Peter D Lee |
| On-Site Speaker (Planned) |
Shishira Bhagavath |
| Abstract Scope |
Laser Powder Bed Fusion (L-PBF) additive manufacturing (AM) is a digital fabrication technology that creates complex components layer by layer using powder feedstocks, increasingly finding application in aerospace, energy, and transportation sectors. However, materials like copper, which are highly reflective to Near Infrared (NIR) lasers, exhibit poor laser-matter coupling. This limits the processing window to high laser powers and low scanning speeds, thereby reducing productivity and increasing energy consumption. Here, by characterising prints across a range of power-velocity parameters and producing process maps we demonstrate that coating copper with Chemically Modified Graphene (CMG) enhances its printability. Compared to pure copper, Cu-CMG enables printing at half the power (for low speeds) and double the speed (at high powers). Further, by coupling in situ synchrotron imaging with in-line camera optical imaging, we identified four melting modes and quantified melt pool geometry, revealing improved melting efficiency and broader processing windows with Cu-CMG. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Sustainability |